Shaping machine



V 0a. 17, 1939'. w, P, 55600,, I 2,176,186

SHAPING MACHINE Origin al Filed Jan. 3, 1936 4 Sheets-Sheet 1 M Mibrzrgy Oct. 17, 1939. w. P. OSGOOD 2,176,136

' SHAPING MACHINE Original Filed Jan 3, 1956 4 Sheets-Sheet 2 Oct. 17, 1939. w. P. OSGOOD SHAPING MACHINE Original Filed Jan. 3, 1936 4 Sheets-Sheet 5 Oct. 17, 1939. w. P. OS GOOD SHAPING MACHINE Original Filed Jan. a, 1936 m wl MU mm. QW Mm m W H w w m m M m w W X 7 I k s m I m a mu, mm w 8 C uh m I m, v w 1 g R N am My m ww n MW I w W Hm ww \ww mm w. mu .3 MM hm hm //vvv Q Q an m kw mm a \I I Z, MN mw J I 90 NM MIQHVQ .JMU. r21 m w L N am n I]! i l .Mh k l Fl |lI| Patented Oct. 17, 1939 UN iTED STATE-S PATENT OFFEQE SHAPING MACHINE New Jersey Application January 3 1936, Serial No.- 57,392 Renewed December 9, 1937 14 Claims.-

The presentinvention relates to machines which are used in the manufacture of shoes to shape a leather shoe upper part locally preparatory to the lasting operation.

-? It ishighly desirable in the manufacture of leather shoes that the upper parts thereof pass through all the shoe making operations without being stretched beyond the elastic limit of the leather therein in order that these parts in wear shall be elastic and hug thefoot at all times notwithstanding walking strains. It becomes necessary sometimes to shape a leather shoe upper part locally preparatory to the lasting operation, but

, in all the prior art machines produced to perform this operation the shaping strain stretched the shoe'upper part beyond the elastic limit of the leather therein, thus setting the locally stretched portion in a permanently deformed condition.

Theprincipal object of the present invention is to produce a machine for shaping a shoe upper part locally preparatory to the lasting operation which will not stretch the part beyond the elastic limit of the leather therein;

Tothe accomplishment of this object a feature of the present invention contemplates the provision in a machine for shaping a shoe upper part locally preparatory to the lasting operation having means for supporting the work and an operating tool,- of meansv for reciprocating the tool and means for relatively moving the tool and the f work supporting means to cause the tool to beat the shoe upper part locally.

The term beat is intended to describe a mode of operation in which the tool strikes the work repeatedly. Broadly considered, the tool may be formed to produce the desired shape in the work'in any manner found desirable or expedient. It is preferred, however, to divide the tool into two parts each of which is reciprocated rapidly in closed paths alternately to beat the work locally, as by this construction and mode of operation small portions of the locality to be shaped are stretched at each beat of one of the parts of the shaping tool.

The heel portion of a completely fitted upper for a leather shoe comprises a pair of leather quarters, a leather heel lining and a counter interposed therebetween. By securing together the pair of leather quarters by aback seam it is possible to conform them'substantially to the peculiar curvature at the back of the last upon which I the fitted upper is assembled-preparatory to the lasting operation. Experience has demonstrated that'it is impracticable to form a leather heel lining by joining two pieces together by a seam similar to a back seam. The heel linings sometimes are made in one piece, sometimes in three pieces, one of which comprises an insert joined between the other two pieces at the heel, and sometimes in two pieces joined together by a lap'seam which 5' breaksjoihtswith the back seam. With this construction of heel linings it is impracticable to shape them so that they even approximately fit the peculiar curvature at the back of a last. In consequence, the back portion of the heel lining is 10 unduly strained during the lasting operation, resulting in wrinkles. This wrinkling of the back portion of the heel lining is particularly objectionable as it is bound to cause discomfort to the wearer of the shoes.

Accordingly, another object of the present invention is to produce a machine by which the heel lining may be shaped to fit the curvature at the back of the last preparatory to the lasting operation, thus to obtain good fitting heel linings.

To the accomplishment of this object, and such others as may appear hereinafter, the various features of the present invention relate to certain devices, combinations and arrangements of parts described hereinafter and then set forth broadly and in detail in the appended claims.

The various features of the present invention will be understood readily by reference to the accompanying drawings illustrating the best form of the invention at present known to the inventor, in'which,

Figure 1 is a view in right side elevation of the machine for shaping a heel lining preparatory to the lasting operation, the heel lining being shown clamped to the apertured work support;

I Fig. 2 is'a View in right side elevation, the heel lining being shown engaged by the reciprocating shaping tool which beats aportion of the clamped heel lining into the aperture of the work sup- 40 por Fig. 3 is a view in plan of a one-piece lining;

Fig. 4 is a view in plan of a heel lining to which an insert is secured by two lap seams;

Fig. 5 is a view in plan of a two-piece lining, the pieces being secured by a lap seam;

Fig.6 is a view in sectional elevation on the line 66, Fig, 3;

Fig. 7 is a view in sectional plan on the line 1 1, Fig. 10; Fig. 8 is 'a detail view in sectional elevation on the line 8-'-8, Fig. 1;

Fig. 9 is a detail view in sectional elevation on the line 9-9, Fig. 10;

Fig. 10 is a view in sectional elevation on the line |E3 -ll, Fig. '7;

Fig. 11 is an enlarged detail view, partly in section, the shaping tool being in the position illustrated in Fig. 2, and

Fig. 12 is a detail sectional elevation on the line iZ-lZ, Fig. 11.

Figs. 3, 4, and illustrate three different types of leather heel linings which have been shaped by the shaping machine embodying the features of the present invention. Fig. 3 illustrates a onepiece lining having a face It which engages the last during the lasting operation. The edges l4 and l 5 are, respectively, the top and bottom edges which engage, respectively, the upper and lower portions of the last exterior. In the interior of that portion of the face I3 which engages directly the peculiar curvature at the back of the last a depression It has been formed, the lip ll of which is oval-shaped. As the curvature at the back of a last is narrow above and broad below, the oval-shaped lip i! is narrower at the end nearer the edge I 4 than at the end nearer the edge l5. As shown in Fig. 6 the depth of the depression is shallower nearer the edge Hi than nearer the edge i5, the greatest depth of the depression being at a point nearer the edge 15 than the edge E l. This depression H5 is a pocket designed to receive the peculiarly shaped portion at the back of the last in order that the heel lining may be drawn tightly to the last during the lasting operation without undue strain and with a total absence of wrinkling.

Fig. 4 illustrates a three-piece lining having two Wings [8 and 19 joined by lap seams iii and 2!, respectively, to an insert 22. The top and bottom edges of the lining are shown at 23 and 24, respectively. In the insert 22 there has been formed a depression in all respects identical with the depression 56, (Figs. 3 and 6).

Fig. 5 illustrates a two-piece lining having two wings 26 and 21 joined together by a lap seam 28. The top and bottom edges of the lining are shown at 29 and 313, respectively. In the wing 26 there has been formed a depression in all respects identical with the depression !6 (Figs. 3 and 6) In accordance with the principal object of the present invention the portion of the heel lining in which the depression i6 is formed is not stretched beyond the elastic limit of the leather. With this mode of operation the depression it does not retain its size and shape after formation but gradually diminishes in size and changes in shape under the quality termed elasticity of the strained leather to regain its original form. As

soon, however, as the heel lining is placed upon work support having an aperture therein. The

portion of the heel lining in which the depression I6 is to be formed overlies the aperture in which position it is held by a skeleton clamp or presser foot which clamps at least a portion of the heel lining to the rim of the aperture. The machine is provided with a shaping tool having two parts.

which are reciprocated rapidly in closed adjacent paths alternately from a double throw eccentric driven from some'suitable source of power.

The clamp and work support are supported in a manner to permit a preliminary adjustment to vary the plane of the clamped work relatively to the paths of movement of the two parts of the shaping tool. A treadle connection is provided to the clamp and the work support so that they may be operated in a predetermined sequence, first to cause the clamp to clamp the work and then to swing the clamped work upwardly and backwardly into the paths of movement of the two parts of the shaping tool. During the swinging movement of the clamped work the points of operation of the two parts of the shaping tool are transferred along the work.

The treadle connection constitutes means to Vary the plane of the clamped work relatively to the paths of movement ofthe two parts of the shaping tool and to vary the pressure between the two parts of the shaping tool and the work during the continued operation of the machine. When the clamped work is brought into the paths of movement of the two parts of the shaping tool they beat the unsupported portion of the clamped Work overlying the aperture thereinto thus forming the depression it. When the treadle is released the clamped work swings back into its first position and the clamp is opened positively to permit the removal of the wor In the illustrated embodiment of the invention the shaping tool is formed in two parts 3i and 32 (Fig. 12). These parts are rapidly vibrated in ciosed paths alternately to beat the unsupported portion of the clamped work into the aperture of the work support to a portion of the rim of which the work is clamped. Each part of the shaping tool has a shape such as to impart to the portion of the work it beats a shape like the quarter section of an egg, the surface which engages the work being curved (Fig. 12) and extended longitudinally (Fig. 1). The adjacent faces of the two parts 3| and 32 are planiform, there being a slight space therebetween.

In its broader aspects the invention contemplates the provision of a tool having a shape like the half-section of a cylinder, which is vibrated rapidly in a closed path to beat the clamped work when it is brought into said path. It is preferred to divide the tool into sections like the quarter of a cylinder and to vibrate these sections rapidly in closed paths alternately, as by so doing the heel lining is stretched incrementally and progressively, thus reducing the tendency of the clamp to give up the portion of the work clamped thereby to a minimum and insuring that the work will be stretched locally well within the elastic limit of the leather therein.

The part 3! of the shaping tool is removably secured to the front end of an arm 33 (Fig. '7) the central hub 35 of which is pivotally mounted on a horizontal rod 35 secured to a frusto-conical shell 36. The rear end of the arm 33 is yoked to receive a stationary pin 3? (Fig. 9) upon which is pivoted the free end of an arm 38 the other end of which has an eccentric strap and link connection with a double throw eccentric 39.

The part 32 of the shaping tool is removably secured to the front end of an arm it which is mounted and actuated from the double throw eccentric 39 in a manner similar to the arm 33. The throws of the eccentric 39 are, however, diametrically opposed so' that the parts 3i and 32 may be vibrated rapidly in short, closed paths alternately.

The parts 3! and 32 of the shaping tool are removably mounted on the arms 33 and 4B, respecclasses of work shaping parts having slightly dif-' ferent shapes may be used interchangeably.

The double throw eccentric 39 is secured to a horizontal shaft 4|, journaled in the shell .36,

' which is driven from some suitable source of providing the actual work supporting surface.

by. a central web 53.

powerby a. belt 42 which passes over a pulley 43 on that. portion of the shaft. 4! extending outside the shell 36. It is usual in this type of machineto provide a treadle connected to a transmitter embodying some form of friction clutch whereby the shaft Al maybe thrown into and out of opera,- tion. at thevwill of the operative. Usually the friction clutch is so constructed that thespeed of rotation of the shaft 4i may be varied through thevariation of the pressure exerted by the operative upon the treadle. In the illustrated embodiment of the invention the treadle rod. is shown at 4.4 (Figs. 1, 2 and 10.).v

Referring, particularly to Figs. 10, 11, and 12, the work supporting structure comprises a skeleton frame 45 having an open bottom 45 and four vertical walls 41. Resting upon the bottom 46 and received within the four vertical walls 41 is a hollow rubber shell 48 having a flange 49 which rests upon the topsof the walls 41. The shell 48 constitutes, a Work support having an aperture therein over which the portion of the heel lining to be stretched is laid, the rim 5G The skeleton frame 45 is formed on a yoke 5| the'parallel arms 52 of which are connected The front ends of the arms 52 are supported upon a bolt 5 which is I carried by agrod 55 the upper'portion of which is threaded' The lower portion of the rod 55 is receivedin an opening56 formed in a split clamp 51- having y0ked;.arms;Whi-ch are pivotally mounted upon aspin 58 carried by the front end of a solid horizontal rod 59 secured rigidly to, the shell 36;

The threaded portion of the rod 55. is engaged by a sleeve nut 60 interposed between the upper end of the clamp 51 and a locking nut 6i. Theupperaend of the rod 55 is'provided with a head62 which receives .a threaded bolt 63 having ahead 66 which engages the head of a'bolt 55 secured to the web 53. The bolt 63 is locked in any desired position of adjustment by a lockingnut 56.

With this construction the work supporting structure is supported from the rod 55 by the bolts ;5l and 63. By lo osening the bolt 54 and by. manipulation of the bolt 63 the initial plane of the work'supporting rim 55 relatively to the paths of movement of the parts 3! and 32 of the shaping tool may be varied. The provision of the threaded connection on the rod 55 permits the initial height of the work supporting rim 5B relatively to the path of movement of the shaping tool to be accurately determined during the assembly of the machine parts. The rod 55 is held in adjusted position within the opening 56 by a bolt 6'! which closes the split clamp 51 upon the'rod 55. The rigid horizontal rod 59 reduces to a minimum the tendency of the work supporting structure to slope si'dewise.

The heel lining is clamped to the rim 50 by a skeleton clamp 69. The clamp is provided with ariarrow front face 10 (Figs..i10, and 11) and two narrow side faces H and E2, (Fig. 12). The faces-.10.; and 12 are prcvidedin the casting operation with a roughened surface to facilitate the clamping of the heel lining to the rim 50.

The clamp 69 is loosely mounted on a horizontal pin 13 the opposite ends of which are clamped to a clamp carrier comprising the free ends of a yoked arm 14 constituting the upper arm of a bell crank lever 15 which is pivoted between the rear ends of the arms 52 on a horizontal pin 16 carried thereby. The lower arm of the'bell crank lever 15 is connected by a short link 11 to an arm 18 pivoted at one end on the bolt 6! and loosely connected at its other end to the treadle rod 44. A spring 19 coiled about the treadle rod A l and interposed between some suitable fixed abutment and a collar on the rod holds the clamp carrier in the position shown in Fig. 10. To this end the upper arm of the bell crank lever 15 is provided with an opening 8| (Fig. 8) which embraces loosely the shank of a bolt 82 which is provided with a slotted head 83 and with a washer 84 interposed between the head 83 and the clamp carrier portion of the bell crank lever 15.

In order to maintain the clamp 69 open both prior and subsequent to the shaping operation, the portion of the clamp 69 carrying the face H is provided with a tail 85 having an open slot 86 which loosely receives the shank of a bolt secured to the web 53, the bolt being pro- Vided with a slotted head 8'! and with a washer 83 interposed between the head 3"! and the tail 85. When the clamp 69 engages the work the tail 85 of the clamp is spaced from the head 81. When the clamp carrier is swung upwardly into engagement with the head 83, the screw head Bl engages the tall 85 and positively opens the clamp.

With the parts in the position shown in Fig. 10 the operative lays that portion of the heel lining in which the depression I6 is to be formed over the aperture in the work support. The operative then steps on the treadle to pull the treadle rod 44 down thus connecting the shaft 4| to the source of power, storing power in the spring 80, and swinging the bell crank lever '15 in a. direction to cause the clamp 69 to engage and clamp the heel lining to the rim 59. After the heel lining has been clamped, further movement of the treadle rod 34 downwardly swings the entire work supporting and clamping structure about the pin 58 as a pivot, thus to bring the clamped Work into the path of movement of the shaping tool.

With this construction and mode of operation the two parts of the shaping tool initially engage the work at a point near the top edge of the heel lining and beat it into the aperture of the Work support under a light pressure. As the work supporting and clamping structure is swung backwardly the plane of the clamped work and the height of this plane relatively to the paths of movement of the two parts of the shaping tool are varied, thus causing the points of operation of the two parts of the shaping tool not only to be transferred toward the bottom edge of the heel lining but to beat the small portion of the heel lining progressively engaged thereby deeper into the aperture of the work support. The heel lining is thus shaped locally to the desired extent without stretching the leather thereof beyond its elastic limit.

The backward swing of the work supporting andclamping structures may be limited by a bolt 89 the head of which engages a plate 90 III = secured to the clamp 51. When the operative retration and explanation.

leases the treadle rod 44 the spring 80 elevates the clamp carrier 14 and the screw head 81 elevates the clamp 69. To return the rod 55 and the clamp 51 to the position of Fig. 10 a coiled spring 9| is provided, one end of which is hooked over the bolt 63 and the other end of which is hooked under a hook 92 carried from the front end of the rod 59.

Nothing herein explained is to be interpreted as limiting the invention in the scope of its application to use in connection with the particular apparatus or the particular mode of operation or both selected for purposes of illus- While the particulars of construction herein set forth are well suited to one mechanical form of the invention, it is not limited to these details of construction, nor to the conjoint use of all its features, nor is it to be understood that these particulars are essential since they may be variously modified within the skill of the artisan without departing from the true scope of the actual invention, characterizing features of which are set forth in the following claims by the intentional use of generic terms and expressions inclusive of various modifications.

What is claimed as new, is:

1. A machine for shaping a shoe upper part preparatory to the lasting operation having, in combination, means for supporting the shoe upper part, a shaping tool, means for reciprocating the tool, and means for relatively moving the tool and the supporting means to cause the tool to beat the shoe upper part locally.

2. A machine for shaping a shoe upper part preparatory to the lasting operation having, in combination, means for supporting the shoe upper part, a shaping tool, means for reciprocating the tool, and means for relatively moving the tool and the supporting means to cause the tool to beat the shoe upper part locally and to transfer the point of operation of the tool over the locality.

3. A machine for shaping a heel lining preparatory to the lasting operation having, in combination, a work support having an aperture to be overlaid by the heel lining, a clamp for clamping the heel lining upon the work support, a shaping tool, means for reciprocating the shaping tool, and means for relatively moving the work support and the reciprocating tool to cause it to beat the interior portion of the heel lining into the aperture.

4. A machine for shaping a heel lining preparatory to the lasting operation having, in combination, a work support having an aperture to be overlaid by the heel lining, a clamp for clamping the heel lining upon the work support, a two-part shaping tool, means for reciprocating the two parts of the tool alternately, and means for relatively moving the work support and the reciprocating tool to cause both parts of it to beat the interior portion of the heel lining into the aperture.

5. A machine for shaping a heel lining preparatory to the lasting operation having, in combination, a work support having an aperture tobe overlaid by the heel lining, a pivoted clamp for clamping the heel lining upon the work support, a shaping tool, means for reciprocating the shaping tool, and a connection from the shaping tool reciprocating means for closing the pivoted clamp upon the heel lining prior to the operation of the shaping tool reciprocating means and for holding the pivoted clamp closed during such operation.

6. A machine for shaping a heel lining preparatory to the lasting operation having, in combination, a work support having an aperture to be overlaid by the heel lining, a clamp for clamping the heel lining upon the work support, and means for producing a depression in that portion of the heel lining overlying the aperture, the lip of said depression having an oval-shape.

7. A machine for shaping a heel lining preparatory to the lasting operation having, in combination, a shaping tool, means for reciprocating it, a work support having an aperture into which the tool beats the interior portion of the heel lining to shape it, a clamp for clamping the heel lining upon the work support, and means for relatively adjusting. the plane of the clamped :vork and the path of movement of the shaping 8. A machine for shaping a heel lining preparatory to the lasting operation having, in combination, a shaping tool, means for reciprocating it, a work support having an aperture into which the tool beats the interior portion of the heel lining to shape it, a clamp for clamping the heel lining upon the work support, and means for relatively adjusting the plane of the clampedwork and the path ofmovement of the shaping tool during the continued operation of the machine.

9. A machine for shaping a heel lining preparatory to the lasting operation having, in combination, a shaping tool, means for reciprocating it, a pivoted work support having an aperture into which the tool beats the interior portion of the heel lining, a clamp carrier pivoted on the work support, a clamp pivoted on the carrier for clamping the heel lining upon the work support, and a treadle connection for swinging the carrier and the work support successively.

10. A machine for shaping a heel lining preparatory to the lasting operation having, in combination, a shaping tool, means for reciprocating it, a work support having an aperture into which the tool beats the interior portion of the heel lining, a clamp for clamping the heel lining upon the work support, and means for relatively moving the clamped work to cause the tool to engage the heel lining near its top edge and beat it progressively towards its bottom edge.

11. A machine for shaping a heel lining preparatory to the lasting operation having, in combination, a shaping tool, means for reciprocating it, a work support having an aperture into which the tool beats the interior portion of the heel lining, a clamp for clamping the heel lining upon the work support, and means for relatively moving the clamped work to cause the tool to engage the heel lining near its top edge and beat it progressively towards its bottom edge and to beat the heel lining progressively deeper into the aperture of the work support as the tool progressively approaches the bottom edge.

12. A machine for shaping a heel lining preparatory to the lasting operation having, in combination, a work support having an'aperture to be overlaid by the heel lining, a clamp for clamping the heel lining upon the Work support, a shaping tool, means for reciprocating the shaping tool towards and away from the clamped heel lining, and a connection from the shaping tool reciprocating means for closing the clamp upon the heel lining prior to the operation of the shaping tool reciprocating means and for holding the clamp closed during such operation.

13. A machine for shaping a heel lining preparatory to its assembly upon a shoe making last having, in combination, a work support having an aperture to be overlaid by the heel lining, a clamp for clamping the heel lining upon the work support, an operating tool and means operating while the heel lining remains clamped upon the work support for moving the tool and the work relatively in two directions substantially normal to each other.

14. A machine for shaping a heel lining preparatory to its assembly upon a shoe making last having, in combination, a work support having an aperture to be overlaid by the heel lining, a clamp for clamping the heel lining upon the work support, an operating tool and means operating while the heel lining remains clamped upon the work support for moving the tool and the work relatively and progressively in two directions substantially normal to each other.

WALTER P. osooop. 

